CN113877017B

CN113877017B - Peritoneal dialysis puts tub fixing device

Info

Publication number: CN113877017B
Application number: CN202111305642.9A
Authority: CN
Inventors: 胡梦思; 吕智美
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2023-10-20
Anticipated expiration: 2041-11-05
Also published as: GB2618230A; WO2023077879A1; CN113877017A; GB202310240D0

Abstract

The invention belongs to the field of peritoneal dialysis, and particularly discloses a peritoneal dialysis tube-placing fixing device, which comprises: an introducer sheath, which is a cavity type introducer; the front end of the guiding sheath core is of a conical structure and is used for being inserted into the guiding sheath to expand the puncture hole of the abdominal wall, and a penetrating hole cavity is formed in the center of the guiding sheath core along the axial direction of the guiding sheath core; the elastic capture device comprises a non-closed elastic ring formed by bending an elastic wire, wherein the elastic ring is positioned in the middle of the elastic wire and used for penetrating through an introducer sheath to fix a dialysis catheter, two ends of the elastic wire are arranged outside the introducer sheath, one end of the elastic wire is used for fixing a dialysis catheter fixing wire, and the other end of the elastic wire is used as a holding part. The device can achieve the purpose of reliably fixing the peritoneal dialysis catheter, effectively reduces complications caused by floating of the postoperative peritoneal dialysis catheter, and has the advantages of being simple in operation, small in wound and high in success rate in the operation process.

Description

Peritoneal dialysis puts tub fixing device

Technical Field

The invention relates to the field of peritoneal dialysis, in particular to a peritoneal dialysis tube fixing device.

Background

Peritoneal dialysis is a clinically common and effective kidney replacement therapy for patients with end-stage renal failure or acute renal failure. Peritoneal dialysis is to use the peritoneal membrane as a semi-permeable membrane, pour the prepared dialysate into the peritoneal cavity of a patient through a catheter by utilizing the gravity effect, and the concentration gradient difference of solutes exists at the two sides of the peritoneal membrane, so that the solutes at the high concentration side move to the low concentration side; the moisture moves from the hypotonic side to the hypertonic side. The peritoneal dialysis solution is continuously replaced to achieve the purposes of removing metabolic products and toxic substances in the body and correcting water and electrolyte balance disturbance. Before peritoneal dialysis, a peritoneal dialysis channel needs to be established, and a peritoneal dialysis tube is implanted into the peritoneal cavity of a patient, i.e. peritoneal dialysis catheterization is performed.

In the traditional peritoneal dialysis catheterization, the peritoneal dialysis is performed by adopting an unfixed peritoneal dialysis catheterization method, namely, a special peritoneal dialysis catheter is implanted into a bladder rectal recess of a male patient or a uterine rectal recess of a female patient. Because the peritoneal dialysis catheter is not fixed in the abdominal cavity, the peritoneal dialysis catheter implanted in the patient is easy to float and shift, so that about 15-20% of patients have the peritoneal dialysis catheter floating and shifting after the conventional non-fixed peritoneal dialysis catheter operation, the peritoneal dialysis is difficult to carry out, the operation is needed again, and the pain and the economic pressure of the patients are increased.

Compared with the conventional non-fixed type peritoneal dialysis catheterization, the current improved peritoneal dialysis catheterization method can effectively avoid the drift of the postoperative peritoneal dialysis catheterization, but if the special instrument is not used for performing the peritoneal dialysis catheterization, the front sheath, rectus abdominus muscle, rear sheath and peritoneum are required to be cut again and sutured about 3cm below the incision of the peritoneal dialysis catheterization, and the operation process is obviously prolonged, so that the method for fixing the peritoneal dialysis catheterization in the peritoneal wall of the peritoneal dialysis catheterization has the defects of high operation difficulty, time-consuming operation, large incision of a patient, great tissue damage and the like, such as obesity or high abdominal pressure of the patient, higher operation difficulty and even incapability of fixing the peritoneal dialysis catheterization.

In order to solve the above problems, a special dialysis tube fixing tool has been developed to avoid the drift of the peritoneal dialysis catheter, for example, publication No. CN 101391119a discloses a peritoneal dialysis tube fixing device, in the scheme disclosed in this patent, a sleeve with a tube core is put under the abdominal anterior abdominal wall at the abdominal incision pouch (the peritoneal dialysis catheter is put into the incision), the abdominal wall is slightly jacked up by the bending section of the sleeve arm, then the abdominal wall is pierced by the spike of the tube core, and the tube core is pulled out from the pouch with a catheter fixing wire, a section of which is fixed on the membrane dialysis catheter, and the other end is fixed at the puncture hole, thereby playing a role of fixing the peritoneal dialysis catheter. The technology disclosed in this patent has operational unsafety:

1. the passage of the sleeve under the abdominal wall belongs to blind vision operation, and the risk of damaging organs in the abdominal cavity exists;

2. because the individual differences of patients are large, the outlet of the tube core puncture is not necessarily consistent with the slightly jacked position of the abdominal wall by the bending section of the cannula arm, and the risk of the non-ideal puncture opening or the damage of other viscera and blood vessels by puncture exists.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a peritoneal dialysis catheter fixing device which can achieve the purpose of effectively fixing a peritoneal dialysis catheter, avoid drifting of the catheter in the abdominal cavity and reduce the incidence rate of secondary operation; the operation is simple, the fixed position is not required to be cut, the wound is small, and the recovery of a patient is facilitated, and the life quality is improved; the operation process is safe, the operation can be carried out under the compatible visual guidance, and the risk of unpredictable organ damage to a patient caused by blind operation in the operation process is avoided.

In order to achieve the above object, the present invention is realized by the following technical scheme:

embodiments of the present invention provide a peritoneal dialysis catheter securement device, comprising:

an introducer sheath, which is a cavity type introducer;

the front end of the guiding sheath core is of a conical structure and is used for being inserted into the guiding sheath to expand the puncture hole of the abdominal wall, and a penetrating hole cavity is formed in the center of the guiding sheath core along the axial direction of the guiding sheath core;

the elastic capture device comprises an elastic ring formed by bending an elastic wire, wherein the elastic ring is positioned in the middle of the elastic wire and used for penetrating through an introducer sheath to fix a dialysis catheter, two ends of the elastic wire are arranged outside the introducer sheath, one end of the elastic wire is used for fixing a dialysis catheter fixing wire, and the other end of the elastic wire is used as a holding part.

As a further technical scheme, the holding part of the elastic wire is provided with a handle.

As a further technical proposal, one end of the elastic wire used for fixing the dialysis catheter fixing wire is provided with a fixing hole.

As a further technical scheme, the elastic catcher is of a split structure.

As a further technical scheme, the elastic capturing device comprises a first elastic capturing piece and a second elastic capturing piece, wherein a first elastic semi-ring is arranged at one end of the first elastic capturing piece, a second elastic semi-ring is arranged at one end of the second elastic capturing piece, and the first elastic semi-ring and the second elastic semi-ring are connected together to form an elastic ring.

As a further technical scheme, the other end of the first elastic catching piece is provided with a handle.

As a further technical scheme, the other end of the second elastic catching piece is provided with a fixing hole.

As a further technical scheme, the first elastic semi-ring or the second elastic semi-ring can actively capture the dialysis catheter into the internal space structure by adjusting the positions of the first elastic semi-ring or the second elastic semi-ring through operation.

As a further technical solution, the radian of the first elastic semi-ring or the second elastic semi-ring is larger than the radian of the semicircle.

As a further technical solution, the elastic catcher is made of elastic wires.

The beneficial effects of the embodiment of the invention are as follows:

the invention provides a peritoneal dialysis catheter fixing device, which can achieve the aim of reliably fixing a peritoneal dialysis catheter, effectively reduces complications caused by floating of a postoperative peritoneal dialysis catheter, and has the advantages of simple operation, small wound and high success rate in the operation process, and concretely comprises the following steps:

1. the device can effectively fix the peritoneal dialysis catheter, avoid the catheter drifting in the abdominal cavity, and reduce the incidence rate of secondary operation;

2. the implantation process of the device is simple to operate, the puncture implantation is not needed, the fixed position is not needed to be cut, the wound is small, and the recovery of a patient is facilitated, and the life quality is improved;

3. the device can be compatible with visual guidance for operation, can carry out navigation by means of modern medical image technology, and avoids unpredictable organ injury risks brought to patients by blind operation in the operation process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

FIG. 1 is a schematic illustration of an introducer sheath and introducer sheath core as disclosed in embodiment one;

FIG. 2 is a schematic illustration of the elastic catch disclosed in embodiment one;

FIG. 3 is a schematic view of the elastic catch disclosed in embodiment one compressed through an introducer sheath;

FIG. 4 is a schematic drawing of the elastic catch disclosed in embodiment one stretched through an introducer sheath;

fig. 5 (1), fig. 5 (2), fig. 5 (3), fig. 5 (4), fig. 5 (5) are schematic views of the operation of the introducer sheath and introducer sheath core disclosed in example 1;

FIG. 6 is a schematic view of the structure of the elastic catcher disclosed in the second embodiment;

FIGS. 7 (1) and 7 (2) are schematic views showing the operation of the introducer sheath and the introducer sheath core disclosed in the second embodiment;

in the figure: 101-an introducer sheath, 102-an introducer sheath core, 103-an elastic catcher, 1031-an elastic ring, 1032-a recovery handle, 1033-a fixing wire fixing hole; 203-a first elastic catch, 204-a first elastic catch; 2031-a first elastic semi-ring, 2032-a recovery handle, 2033-a magnet, 2041-a second elastic semi-ring, 2042-a fixed wire fixing hole, 2043-a magnet.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

As described in the background art, the prior art has the defects, in order to solve the technical problems, the invention provides a peritoneal dialysis catheter fixing device, which can fix a peritoneal dialysis catheter through operation, effectively reduce complications caused by floating of the postoperative peritoneal dialysis catheter, and has the advantages of simple operation, small wound and high success rate in the operation process, and the device specifically comprises the following steps:

1) The device can achieve the purpose of effectively fixing the peritoneal dialysis catheter, avoid the catheter drifting in the abdominal cavity and reduce the incidence rate of secondary operation;

2) The implantation process of the device is simple to operate, the puncture implantation is not needed, the fixed position is not needed to be cut, the wound is small, and the recovery of a patient is facilitated, and the life quality is improved;

the device can be compatible with visual guidance for operation, can carry out navigation by means of modern medical image technology, and avoids unpredictable organ injury risks brought to patients by blind operation in the operation process.

Example 1

In one exemplary embodiment of the invention, a peritoneal dialysis catheter fixing device is disclosed, comprising an introducer sheath, an introducer sheath core and an elastic catcher; the guiding sheath is a thin-wall cavity type guiding device used for guiding the elastic catcher into the abdominal cavity at the position where the peritoneal dialysis tube needs to be fixed. The guiding sheath core is matched with the guiding sheath for use, and the front end of the guiding sheath core is provided with a conical structure for expanding the puncture hole of the abdominal wall; the center of the catheter is provided with a through hole cavity, so that a threading guide wire can conveniently pass through the catheter, and the abdominal wall can be directionally expanded. The elastic catcher is made of elastic metal wires, has the capability of recovering the original state after being greatly deformed, and is matched with the guide sheath for use. The device can be applied to peritoneal dialysis catheterization, and can safely and effectively fix a peritoneal dialysis catheter. The device is matched with an abdominal cavity puncture kit for use, and the puncture kit is a common clinical instrument and is usually composed of a puncture needle and a puncture guide wire.

The invention is described below with reference to the accompanying drawings:

the peritoneal dialysis catheter securement device disclosed in this embodiment includes at least 3 parts: an introducer sheath 101, an introducer sheath core 102, and an elastic catch 103.

As shown in fig. 1, the introducer sheath 101 is a thin-walled cavity type introducer for introducing the elastic catch 103 into the abdominal cavity at a location where the peritoneal dialysis tube needs to be secured. Further, in this embodiment, for convenience of operation, a protrusion is further provided at the tail of the guiding sheath 101. It should be further noted that the thin wall herein does not refer to a certain thickness, and the thickness thereof is sufficient for operation.

As shown in fig. 1, the front end of the guiding sheath core 102 is provided with a conical structure for expanding the puncture hole on the abdominal wall; the guide sheath core 102 is used in cooperation with the guide sheath 101, and a penetrating cavity of about phi 1.0mm is formed in the center of the guide sheath core 102 along the axial direction of the guide sheath core 102, and the cavity facilitates the passage of a puncture guide wire so as to directionally expand the abdominal wall. Further, in order to limit the position of the guiding sheath core 102 in the guiding sheath 101 in the present embodiment, a protrusion is also provided at the tail of the guiding sheath core 102, and when the head of the protrusion contacts with the tail of the guiding sheath 101, the guiding sheath core 102 is penetrated in place.

In addition, the diameter of the through hole in the center of the guide sheath core 102 is set according to the diameter of the puncture guide wire, and is not limited to Φ1.0mm disclosed in this embodiment.

As shown in fig. 2, the elastic catcher 103 in this embodiment is a monolithic structure, which is made of elastic wires (nickel-titanium alloy wires or other elastic materials that can satisfy basic properties) and has the ability to recover after being deformed greatly. The elastic catching ring 103 according to the embodiment of the present invention has the following capabilities when used in combination with the guiding sheath 101 due to its elastic characteristics:

1. it can be compressed and then enter the cavity of the guide sheath 101, and can restore the original shape after passing through the guide sheath (as shown in fig. 3);

2. can be pulled out from one end through the guide sheath by being pulled into an approximately straight line shape with the assistance of an external force (as shown in fig. 4).

Further, the elastic catcher 103 is formed with an elastic ring 1031, a recovery handle 1032, and a fixing wire fixing hole 1033 by bending an elastic wire. The elastic ring 1031 is located at the middle position of the elastic metal wire (the middle part is not particularly designated as the central position), the elastic ring 1031 provides a passable cavity for the dialysis catheter, and the dialysis catheter can be passed through the center of the elastic ring 1031 under the guidance of ultrasound or other modern medical imaging means; the fixation wire fixation hole 1033 is located at one end of the elastic wire, which is used for fixing the dialysis catheter fixation wire; the retrieval handle 1032 is located at the other end of the resilient wire, and in operation, the entire resilient catch 103 can be pulled out of the introducer sheath by pulling on the retrieval handle 1032 (as shown in fig. 4) while one end of the fixation wire is pulled out after bypassing the dialysis catheter, thereby securing the dialysis catheter to the abdominal wall via the fixation wire after withdrawal of the device of the invention.

It should be further noted that the elastic ring 1031 is not a completely closed ring, and is formed by bending an elastic wire, so that the elastic ring 1031 cannot be completely closed, and has a certain gap at the bending position, and the shape of the elastic ring 1031 is not necessarily circular, but is not limited.

The specific use of the device is described below:

step 1: in the peritoneal dialysis catheter catheterization, a proper fixed position is determined near the inlet of the dialysis catheter, the abdominal wall is punctured by using an abdominal cavity puncture kit, a guide wire is placed, and a puncture needle is withdrawn, as shown in fig. 5 (1);

step 2: inserting the guide sheath core 102 into the guide sheath 101, penetrating a guide wire into a cavity of the guide sheath core, pushing the guide wire along the guide wire, namely, the guide sheath core 102 until the front end of the guide sheath 101 penetrates through the abdominal wall to enter the abdominal cavity, and withdrawing the guide wire and the guide sheath core 102; FIG. 5 (2) is a schematic view showing the state where the leading end of the introducer sheath 101 and the introducer sheath core 102 penetrate the abdominal wall into the abdominal cavity;

step 3: the elastic catching ring 103 is compressed and delivered to the elastic ring 1031 through the guide sheath 101 to completely enter the abdominal cavity and restore the original state, as shown in fig. 5 (3).

Step 4: under the guidance of ultrasound or other modern medical imaging techniques, the dialysis catheter is passed through the center of the elastic ring 1031 and pushed into place; one end or the middle portion of a dialysis catheter fixation line (typically a suture) is fixed to the fixation line fixation hole 1033, as shown in fig. 5 (4).

Step 5: the recovery handle 1032 is pulled slowly until the elastic catching ring 103 is pulled out of the guide sheath 101 as a whole, the guide sheath 101 is withdrawn (at this time, the dialysis catheter fixing wire should be kept to bypass the dialysis catheter and both ends are left outside the abdominal wall), the dialysis catheter fixing wire is pulled and knotted and fixed at a proper tissue site (such as muscle, subcutaneous, abdominal wall, etc.) of the human body, the puncture hole is closed, and the dialysis catheter fixing operation is completed, as shown in fig. 5 (5).

It should be noted that the materials used in this embodiment should meet the requirement of biocompatibility, and also meet the capability of developing under ultrasound or other modern medical imaging systems.

Example two

The present embodiment discloses another fixing device for a peritoneal dialysis catheter, in which the guiding sheath 101 and the guiding sheath core 102 are identical to those of the first embodiment, and are not described herein, and the differences between the fixing device and the first embodiment are mainly that the elastic catcher has a different structure, specifically as follows:

the elastic capture device of the device matched with the guiding sheath 101 disclosed in the embodiment is of a split structure, and comprises two parts, namely a first elastic capture piece 203 and a second elastic capture piece 204; the first elastic capturing element 203 and the second elastic capturing element 204 are made of elastic metal wires (nickel-titanium alloy wires or other elastic materials capable of meeting basic performances), and also have the capability of restoring to an original state after being greatly deformed, and after being matched with the guiding sheath 101 for use, the following capabilities are provided:

1. it can be compressed and then enter the cavity of the guide sheath 101, and can restore the original shape after passing through the guide sheath;

2. can be pulled out from one end through the guiding sheath by being pulled into an approximate linear shape with the assistance of external force.

Further, the first elastic catching member 203 includes a magnet 2033, a first elastic half ring 2031 formed by bending an elastic wire, and a recovery handle 2032; wherein first elastic half ring 2031 is formed at one end of the elastic metal wire, recovery handle 2032 is formed at the other end of the elastic metal wire, and magnet 2033 is located on first elastic half ring 2031. Further, in this embodiment, the radian of the first elastic semi-ring 2031 is greater than that of a semicircle, so that the purpose of the design is to actively capture the dialysis catheter into the dialysis catheter by adjusting the position of the first elastic semi-ring 2031 through operation, the internal space structure of the first elastic semi-ring 2031 is the passage channel of the dialysis catheter, and the dialysis catheter can be captured into the annular interior by passing through the center of the first elastic semi-ring 2031 under the guidance of ultrasound or other modern medical imaging means or by operating the recovery handle under the guidance of ultrasound or other modern medical imaging means; the retraction handle 2032 is used to retract the first elastic catch 203 and the second elastic catch 204; the magnet 2033 is used to connect the first elastic catch 203 and the second elastic catch 204.

Further, the second elastic catching member 204 includes a magnet 2043, a second elastic semi-ring 2041 formed by bending an elastic metal wire, and a fixing wire fixing hole 2042, wherein the second elastic semi-ring 2041 is formed at one end of the elastic metal wire, the fixing wire fixing hole 2042 is formed at the other end of the elastic metal wire, and the magnet 2043 is located on the first and second elastic semi-rings 2041; wherein the radian of the second elastic semi-ring 2041 is smaller than that of the semicircle, the second elastic semi-ring 2041 can be combined with the first elastic semi-ring 2031 through the magnet 2043 and the magnet 2033 to form a non-closed ring, and the ring can accommodate the dialysis catheter; the fixation wire fixation holes 2042 are used to fix the dialysis catheter fixation wires.

It should be noted that, in other embodiments, the circular arc of the first elastic half ring 2031 and the second elastic capturing member 204 may be designed such that the arc of the second elastic capturing member 204 is larger than the arc of the semicircle, and the arc of the first elastic half ring 2041 is smaller than the arc of the semicircle.

Further, the magnet 2033 and the magnet 2043 are matched to combine the first elastic capturing element 203 and the second elastic capturing element 204 into a whole to form an elastic capturing element, and the magnetic force between the two can be used for pulling the combination of the first elastic capturing element 203 and the second elastic capturing element 204 out of the guide sheath by pulling the recovery handle 2032.

The device disclosed by the embodiment scheme is specifically used and operated as follows:

step 2: inserting the guide sheath core 102 into the guide sheath 101, penetrating a guide wire into a cavity of the guide sheath core, pushing the guide sheath core 102 along the guide wire until the front end of the guide sheath 101 penetrates through the abdominal wall to enter the abdominal cavity, and withdrawing the guide wire and the guide sheath core 102, as shown in fig. 5 (2);

step 3: compressing the first elastic catch 203 and delivering to the first elastic half ring 2031 through the introducer sheath 101 completely into the abdominal cavity and restoring;

step 4: under the guidance of ultrasound or other modern medical imaging techniques, the dialysis catheter is passed through the center of the first elastic half ring 2031 and pushed into place; or the recovery handle is operated under the guidance of ultrasonic or other modern medical imaging means to capture the dialysis catheter into the first elastic semi-ring 2031, as shown in fig. 7 (1);

step 5: compressing the second elastic catching member 204 and delivering to the second elastic semi-ring 2041 through the guide sheath 101 to completely enter the abdominal cavity and restore the original state; adjusting the position of the compressed second elastic catch 204 to combine the magnet 2033 and the magnet 2043 with each other; securing a dialysis catheter fixation wire (typically a suture) to fixation wire fixation hole 2042, as shown in fig. 7 (2);

step 6: the recovery handle 2032 is pulled slowly until the combination of the first elastic catch 203 and the second elastic catch 204 is pulled out of the introducer sheath 101 as a whole, the introducer sheath 101 is withdrawn (at this time, the dialysis catheter fixing wire should be kept around the dialysis catheter and both ends are left outside the abdominal wall), the dialysis catheter fixing wire is pulled taut and fixed by knotting on the abdominal wall, the puncture hole is closed, and the dialysis catheter fixing operation is completed, as shown in fig. 5 (5).

The materials used in the embodiments of the present invention need to meet the requirements of biocompatibility and also meet the capability of development under ultrasound or other modern medical imaging systems.

The schematic diagrams used in the embodiment of the present invention are only used for illustration, the actual implementation scheme can be different from the schematic diagrams, and the first elastic semi-ring 2031 and the second elastic semi-ring 2041 can also be rectangular, polygonal or other space shapes, so that the above functions can be achieved.

Example III

The difference between this embodiment and the first or second embodiment is that: the fixing wire fixing holes are eliminated, the elastic catcher is directly used as the fixing wire to fix the dialysis catheter, and other structures are identical to those of the first embodiment or the second embodiment, and are not repeated here.

The materials used in this embodiment are required to meet the requirements of implantable bio-compatibility and also to meet the capability of imaging under ultrasound or other modern medical imaging systems.

Example IV

The difference between this embodiment and the first or second embodiment is that: meanwhile, a fixing wire fixing hole and a recovery handle are omitted, one end of the elastic capture device is directly used as a fixing wire to fix the dialysis catheter, the other end of the elastic capture device is directly used as a handle to hold, and other structures are identical to those of the first embodiment or the second embodiment and are not repeated here.

Example five

The difference between this embodiment and the second embodiment is that: the first elastic capturing element 203 and the second elastic capturing element 204 are not provided with magnets, and mechanical structures which can be reliably connected and separated, such as a movable buckle structure, a collar structure, a hanging buckle structure and the like, are arranged between the first elastic capturing element 203 and the second elastic capturing element 204, and the other structures are identical to those of the second embodiment, the third embodiment and the fourth embodiment.

The materials used in this embodiment should meet the requirement of biocompatibility and also meet the capability of developing under ultrasound or other modern medical imaging systems.

In summary, the elastic catcher disclosed in the embodiment may be an integral type or a split type, and may implement the following functions:

1. after being delivered into the abdominal cavity through the guide sheath, the catheter can be unfolded and can take on an annular or other space structure, and the inside of the catheter can accommodate the dialysis catheter to pass through;

2. the dialysis catheter can be guided by ultrasound or other modern medical imaging means to pass through the center of the dialysis catheter or can be actively captured into the internal space structure by adjusting the position of the dialysis catheter in a split mode;

3. the dialysis catheter fixing wire can be fixed at one end, the whole dialysis catheter fixing wire can be pulled out of the guide sheath by pulling the other end, and meanwhile, the dialysis catheter fixing wire is guided, the fixing wire is pulled out of the guide sheath after bypassing the dialysis catheter, so that the dialysis catheter can be fixed on the abdominal wall through the fixing wire after the elastic capture ring is withdrawn;

4. when the catcher is integral, the catcher can also be directly used as a fixing device to fix the dialysis catheter;

5. when the catcher is split, a structure which can be reliably connected and separated is arranged between the catcher and the catcher, such as a magnetic connection structure, a movable buckle structure, a lantern ring structure, a hanging buckle structure and other feasible structures.

The device disclosed in the embodiment of the invention is matched with the abdominal cavity puncture kit for use, can be used in a normal state, artificial ascites, pneumoperitoneum and other states, and can also be used for short-term or long-term fixation of implanted medical instruments in human organs.

In addition, the solutions disclosed in the above-mentioned five embodiments are not mutually exclusive, and the peritoneal dialysis catheter may be simultaneously fixed by using any one or any two or any three of the above-mentioned devices in the same peritoneal operation.

Finally, it is pointed out that relational terms such as first and second are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A peritoneal dialysis catheter securement device, comprising:

an introducer sheath, which is a cavity type introducer;

2. The peritoneal dialysis catheter securement device of claim 1, wherein the grip portion of the elastic wire is provided with a handle.

3. The peritoneal dialysis catheter fixing device of claim 1, wherein one end of the elastic wire for fixing the dialysis catheter fixing wire is provided with a fixing hole.

4. The peritoneal dialysis catheter securement device of claim 1, wherein the elastic catch is of a split construction.

5. The peritoneal dialysis catheter securement device of claim 4, wherein the elastic capture element comprises a first elastic capture element and a second elastic capture element, wherein a first elastic semi-ring is disposed at one end of the first elastic capture element, a second elastic semi-ring is disposed at one end of the second elastic capture element, and the first elastic semi-ring and the second elastic semi-ring are connected together to form an elastic ring.

6. The peritoneal dialysis catheter securement device of claim 5, wherein the other end of the first resilient catch member is provided with a handle.

7. The peritoneal dialysis catheter securement device of claim 5, wherein the other end of the second elastic catch member is provided with a securement aperture.

8. The peritoneal dialysis set forth in claim 5 wherein the first or second elastic half-ring is operable to adjust its position to actively capture the dialysis catheter into its interior spatial configuration.

9. The peritoneal dialysis catheter securement device of claim 5, wherein the first elastic half loop or the second elastic half loop has an arc that is greater than the arc of a semicircle.

10. The peritoneal dialysis catheter securement device of claim 1, wherein the elastic catch is made of an elastic wire.